Pneumatic trough



mm ma i Thinnest-i611i-naett r air laboratoriesfor Seton Patented O ct. 30, 1928. A

j 1,690,073 Parr- T 9 abshrfl' m1 nvnmoni mnmois, Assm'noa are;oiiii'rmt' scientific coummr, or cn caeo, ILLINOISEIK commandant tremors:

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ls colleges eiiperimental departmen s offac ne and he'like.

The principal objec to'f the 'inv'e'ritioiiis the rovisian' ofa new and unproven pneumatic trough so constructed-that it will be held spaced from its support and at the same time will be so fabricated that any desired number may be. nested for shipment without danger of injuring the devices or any portion thereof. i

Another object of the inventionis the pro-' vision of a new and improved pneumatic trough that is simple and rugged 1n construction, cheap to manufacture, easily assembled,

. lowing description taken in connection with the accompanying drawings, in which Fig. 1 is a perspective view of the pneumatictrough; j

Fig. 2 is a vertical section thereof;

Fig. 3 is an end view of a plurality of nested pneumatic troughs; and Fig. 4 is a top plan view thereof.

In the construction of pneumatic troughs which are used for thecollection of gases over water it is desirable that they be provided with means for supporting them iii-spaced relation above the table or desk or other supporting surface, because in certain experiments the Water contained in the trough is hot and consequently the hot container would injure the finish on the desk or'table if per, mitted to come in direct contact therewith. fIt is necessary. also to provide an overflow pipe for removing the excess, water from the trough. Each trough is also supplied with a test tube or gas containersupport.

Heretofore, great difliculty has been experienced in shipping devices of this character because of their peculiar construction, and consequently each device is usually packed separately. A separate package for each device is not only expensive but requires a greatdeal of additional labor in preparing each article for shipment. p a

The present invention contemplates a construction'in which each device 'will be provided with the necessary parts and the whole be so constructed that any desired number may be nested and prepared for shipmentin a sing-1e; comparatively sinailgpacliage, therebyel'iii'iiiiatiiig then ecessity for a single p'acliagefor each article. p p v r the for n of device selected to illustrate one embodiment of the invention, the

neumatic trough :is designated generally bythe reference ch'aiabter 9. Thetrotig'li inay be made from any suitable material, and is adapted to contain water'under which gas is adapted to be collected in a manner well known in the art. The device shown is made from sheet metal bent to form a receptacle 10 havingits upper edge portion bent about a wire 11 to form a bead 12 for reii'iit'orcing the same. i

The receptacle is preferably tlicugh not necessarily rectangular in horizontal tion, and its end and side walls converge slightly toward the bottom of the receptacle. L

A suitable overflow pipe 13 is provided in one end of the receptacle in proximity to the bead 12. i i

' Suit-able legs 14 are provided for supporting the receptacle. These legs are attached to the bottom of the receptacle withinthe confines of the periphery thereof. Each leg is curved or convex on its lower end whereby the same will not injure the finish o't'asun face on which the trough maybe placed. The length ofthe legs 14 is substantially the same as the distance between the lower portion of the overflow pipe 13 and the top of the receptacle 10 whereby when the receptacies are nested the legs will support the inner recepta-cles from the bottom walls of the outer ones with the overflow pipes extending outwardly over the end walls ofthe correspond ing outer receptacles, and in close proi-zimity thereto. A l a A suitable support15 is provided for bolding the test tube or other gas container in position forcollecting the gas. This support is provided with a body portion 16 having one or more openings 17 for receiving the gas collecting container and the tube or conduit for conducting thev gas from the generator t oa point beneath the gas collecting container, as isusnal in such construct-ions Each end of the body portion 16 is provided with a hanger 18having a hook shaped upper end 19 for engaging over the reinforcing, bead 12 for supporting the body portion 16 below the top edge of said trough as clearly shown in Fig. 1. The hangers are inclined at substantially the same angle as the walls of the receptacle 10 whereby the supports will not only tit into said receptacle, but ma be nested as cl ,irly indicated on the drawing.

In preparing a shipnient 0t troughs. the supports 15 are removed and a number of the. troughs are nested to form a package of the required size, as shown in Figs. 2 and 3. The supports 15 are nested and plaeed in the upper trough as indicated in Figs. 2 and -'l-, after which the package thus assembled is ready to be placed in a suitable shipping crate or box.

I claim as my invention:

A pneumatic trough comprising a receptacle tapering downwardly and of a substantial depth, an overflow pipe secured in an opening in one Wall of said receptacle adjacent to the upper edge thereof, and extending outwardly a substantial distance for man ducting excesa fluid from said receptacle; to a point out of contact with said wall. and supporting legs extending downwardly from the bottom wall of .aid rere iitacle and urranged within the contour tllereol. eaid leg-s being oi such length that when a plurality of said recc 'itacles are nested for shipment said pipes each will he supported adjacent to but out of contact with the upper edge of the next adjacent outer receptacle.

In testimony whereof I atlix my signature.

JOSEPH H. Kl XCA ll). 

